Getting a Secret security clearance typically takes about four to five months from the day your completed application reaches investigators to the day an adjudicator issues a final decision. As of the third quarter of fiscal year 2025, the Defense Counterintelligence and Security Agency reported average Tier 3 processing of roughly 18 days for initiation, 73 days for investigation, and 47 days for adjudication. Add those together and you get about 138 days, or four and a half months. Many applicants start work sooner than that on an interim clearance, and some cases stretch past six months when personal history or backlogs complicate the review.
The Three Phases and Where the Time Goes
A Secret clearance, formally a Tier 3 investigation, moves through three distinct stages handled by different parts of the system. Understanding each helps explain why the total is measured in months rather than weeks.
Initiation
After your sponsoring agency or contractor opens the case and you submit Standard Form 86 through the eApp portal, DCSA formally initiates the investigation. This phase averages about 18 days for Tier 3 cases. Most of that time is administrative: verifying the paperwork is complete, running fingerprints against national criminal databases, and assigning the file to a field investigator.
Investigation
This is the longest and most variable phase, averaging around 73 days. A field investigator verifies the claims on your SF-86 by pulling records, contacting your listed references and former supervisors, and sometimes interviewing you directly. A straightforward case with a stable address history and a short reference list moves faster. A case involving extensive foreign travel, many past employers, or hard-to-reach references stretches longer.
Adjudication
Once the investigative file is complete, it goes to an adjudication facility. For Department of Defense cases, that is the DoD Consolidated Adjudication Facility, the largest such facility in government.1Defense Counterintelligence and Security Agency. DoD CAF By the Numbers An adjudicator reviews the evidence against federal guidelines and decides whether granting you access is consistent with national security. This phase averages about 47 days for Tier 3 cases. The adjudicator does not redo the investigation; they weigh what the investigator gathered.
You May Be Able to Start Work Before the Investigation Ends
Because the full process takes months, most agencies routinely consider applicants for interim eligibility. An interim Secret clearance lets you begin work and access most classified material while the full investigation continues in the background.2Defense Counterintelligence and Security Agency. Interim Clearances The interim decision is typically made concurrently with the initiation of the investigation. In practice, many applicants receive interim status within a few weeks of submitting a completed SF-86 and fingerprints.
Interim access has real limits. It does not cover Communications Security material, Restricted Data, or NATO classified information. It can also be pulled immediately if something negative surfaces during the full investigation. Not everyone qualifies, either. If your SF-86 shows significant foreign ties, financial problems, or a criminal history, the reviewing adjudicator may decline to issue an interim and wait for the full determination. There is no appeal for an interim denial; you simply wait for the final decision.
What Slows a Case Down
The 138-day figure is an average. Several factors reliably push a case past it:
- Extensive foreign travel or foreign contacts, which may require coordination with other agencies.
- Frequent moves or many past employers, since each address and each job is a separate record check.
- Financial problems such as significant delinquent debt, bankruptcies, or unexplained wealth, which trigger deeper scrutiny.
- Unresponsive references or former supervisors; the file sits idle until the investigator makes contact.
- Foreign national family members, which prompt additional review.
Backlog matters too. As of mid-2025, the overall DCSA case inventory had dropped to about 222,700, down from over 291,000 the prior year.3Defense Counterintelligence and Security Agency. DCSA Personnel Vetting Initiative Transforms Security Clearance Investigation Process, Case Inventory Drops 24% When inventory spikes, even clean cases move slower because investigators are stretched thin.
How To Avoid Delays You Cause Yourself
The single biggest source of preventable delay is a sloppy SF-86. If an investigator cannot verify an address or reach a listed supervisor, your file stalls until the gap is closed. Before you sit down to fill out the form through eApp, gather the records you will need. The lookback periods are specific:4Office of Personnel Management. SF 86 – Questionnaire for National Security Positions
- Every address where you have lived for the past 10 years.
- All jobs held in the past 10 years, with supervisor names and current contact information.
- Schools attended in the past 10 years, plus any degree earned before that window.
- Every trip outside the United States in the past 7 years, with dates and destinations.
- Foreign government contacts, foreign business involvement, or sponsorship of a foreign national in the past 7 years.
- Any use of controlled substances in the past 7 years. A separate question asks whether you have ever used drugs while holding a security clearance or a position of trust; that one has no time limit.
You will also report financial delinquencies, legal encounters, mental health treatment, and alcohol-related incidents. Personal references get called, so provide current phone numbers and warn each reference to expect contact from a federal investigator. Getting every detail correct on the first pass is the most effective thing you personally can do to shorten the timeline.
One point worth knowing before you start: you do not pay for any of this. The federal government covers the full cost, which runs about $455 for a standard Tier 3 case in fiscal year 2026.5Defense Counterintelligence and Security Agency. Billing Rates and Resources Your employer is not billed either. You also cannot start the process on your own; a sponsoring agency or contractor has to open the case after extending you a conditional offer.
If You Already Hold a Clearance
If you have an active Secret clearance and are moving to a new agency or contractor, you generally do not start over. Federal policy under Security Executive Agent Directive 7 requires agencies to accept another agency’s clearance determination within five business days of receiving the request, provided your most recent investigation is less than seven years old and no new derogatory information has surfaced.6Office of the Director of National Intelligence. Security Executive Agent Directive 7 – Reciprocity The receiving agency verifies your clearance in government databases and, absent red flags, grants access.
The five-business-day target is sometimes exceeded because of administrative processing or systems that do not talk to each other smoothly. But the policy exists to prevent agencies from forcing a cleared person through a fresh investigation. If a new employer tells you a full reinvestigation is required when you already hold an active clearance at the same level, that is worth questioning.
If your clearance lapsed because you left cleared work and more than two years have passed, expect to go through a new investigation on the standard four-to-five-month timeline. If the gap is shorter, reinstatement is often possible without starting from scratch, though the receiving agency may still run updated checks before granting access.